$(function() { $("#slide_navigation li a").click(function() { var curList = $("#slide_navigation li a.slide_current").attr("rel"); var $newList = $(this); var curListHeight = $("#slide_content").height(); $("#slide_content").height(curListHeight); $("#slide_navigation li a").removeClass("slide_current"); $newList.addClass("slide_current"); var listID = $newList.attr("rel"); if (listID != curList) { $("#"+curList).fadeOut(200, function() { $("#"+listID).fadeIn(); var newHeight = $("#"+listID).height(); $("#slide_content").animate({ height: newHeight }); }); } return false; }); });